Edward m



(No Model.) a l I E. M. SMITH &' G. H. HEGK.

FEEDER FOB, FLOURING MILL$. N0. 333,351. Patented Dec. 29, 1885.

.dttorne y I'L FETUS. Hmlwulhognphnr, Wuhingian, D. C.

v U ITED STATES PATENT VQFFICEQ EDWARD M. SMITH AND CHARLES H. HECK, OF TECUMSEH, MICHIGAN, ASSIGNORS OF ONE-THIRD TO ORIN B. DE WOLF, OF SAME PLACE.

FEEDER FOR FLOURlNG-MILLS.

SPECIFICATION forming part of Letters Patent No, 333,351, dated December 29, 1885.

Application filed March 3, 1885. Serial No. 157,694. (No model.)

.To-all whom it may concern.-

Be it known that we, EDWARD M. SMITH and CHARLES H. HEOK, of Tecumseh, in the county of Lenawee and State of Michigan,

have invented a new and useful Improvement in Feeders for Flouring-Mills, of which the following is a specification.

The invention relates to feed-regulators for grinding-mills; and the novelty consists in the to 'peculiar'construction, arrangement, and combination of parts hereinafter more fully described, and specifically pointed out in the claims.

The object of the invention is to spread the material along the length of the roll, and to this end it is desired to keep a quantity of the material in the hopper at all times when in operation. The hopper is suspended near its top, and'a spring serves to hold the feed-plate at the bottom of the hopper against the face of the roll with such force that any material passing between the feed-plate and the roll will spread out along the face of the roll in as thin a stratum as the power of the spring as adjusted will allow.

In the drawings, Figure 1 is a perspective view of the device, and Fig. 2 is an end elevation, the internal parts being shown in dotted lines.

Referring to the drawings, A designates the main frame or box, upon the outer surface of the ends of which are pivoted at f the plates F, having at their lower end slots f, through which pass set screws f. In these plates F are held the ends of a rod, D,

upon which, by brackets E, is hung the feedhopper B, the rod D passing loosely through curved slots at in the box A, arranged above the pivots f of the plates F. The exit-mouth of the hopper is arranged between the lower portions of its inclined back B and its vertical front B, and the lower part of the front B is formed of a metal plate, a, which, when the device is in operation, is held yieldinglyl against the roller 0. ,l,

Rigid upon the outer ends of the rod D is, adj ustably secured an arm, G, by the set-screw l g. A spring, H, is secured at one end to the lower or front end of said arm G, and at the other to a threaded rod, I, which, passing through a bracket, J, rigid on the main frame, and being adjusted by a thumb-nut, K, allows the force of the spring H to be regulated at will, or as occasion may require.

The entire working parts-that is to say, the hopper and its immediate attachments-are hung from the pivots f, and the plate a, is held to the face of the roll 0 by the force of the spring H, as adjusted and predetermined by the position of thenut K. The material passing into the hopper is held therein until it has spread along the entire surface of the roll and sufficient has accumulated to cause its weight to overcome the power of the spring, and thus by oscillating the hopper on the rod D, make a small opening along the whole face of the roll G, between it and the plate a. Through this space the material feeds in a stratum corresponding to the size of the opening between the roll and plate. Should there, for any reason, happen to be less material in the hopper than usual, the force of the spring will act on the hopper and thus partially close the opening and lessen the feed; but it still keeps it spread along the entire face of the roll. By 75 this means we avoid the liability of the material passing to the grinding-rolls unevenly, and thus distribute the Wear equally along 1 their whole surfaces. By means of the slot f 2 .we can always adjust the hopper so that the plate a will be equidistant from the roll C throughout its length. A slide, L, allows the feed to be'cut off entirely whenever such a result is desired. This slide works in grooves or .ways I in the hopper B, parallel with its inclined back.

1 We claim- 1. The combination, with the casing A, roll 0, and spring H, of the hopper B, supported on the rod D and having an inclined back, a vertical front, and metal plate a, adjusting means, as I J K, and the lever G,having set-screw g, the lever serving to connect the hopper-pivots with the spring and its adjusting means, and the said set-screw g serving to adjust the relations of thelever with the hopper, all arranged and operating jointly as bracket J, and feed-r0110, as and for the purset forth. poses set forth.

2. The combination, with the plates F,hav'- EDWARD M. SMITH. ing curved slots f, screws f, and pivots f, CHARLES H. HEGK'.

V 5 the rod D, brackets E, and suspended hopper Witnesses:

having feed-plate a. of the arm G, having set- R. O. VAN ANTWERP, screw 9, the spring H, threaded rod I, nut K, CHARLES BURRIDGE. 

